信州落叶松人工林生长模型及其系统收获表的研究

GROWTH MODEL AND CONSTRUCTING A SYSTEM YIELD TABLE FOR LARIXK AEMPFERI PLANTATION

系统收获表能预测现实林分在各种经营体系下的生长过程和收获量。本文根据信州落叶松人工林固定标准地观测数据，从林分和单木两个水平分析和建立了生长模型，在此基础上编制了信州落叶松人工林系统收获表，提出系统收获表的一般编制方法。本研究的特点是以现实林分为研究对象，建立全林分生长模型和林分径阶生长模型，将前者的总生长量通过后者分配给各直径阶和树高阶，以保证林分水平的预测结果和单木水平的生长是相容的。

The system yield table can be adapted to various stand structures and forest treat￣ments.At first,growth models at either tree level or stand level were established using the growth data of the permanent sample plots.Next,based on the growth models,a system yield table for Larix kaempferi stand was worked out and the proce￣dure of constructing the system yield table was generalized.The distinguishing feature of this study is that the object of this study is the present stand so as to establish a growth model for the whole stand and for stand diameter groups.Total growth incre￣ment from the former can distribute to diameter groups and tree height groups by the latter to ensure the predicting results at stand level to be compatible with the growth of a single tree。